KR20050112228A - The method and system for rendering surface slope using a slope vector - Google Patents

Abstract

The present invention relates to an image processing method and system for representing the inclination of the surface, and more particularly to an image processing method and system for representing the inclination of the surface by generating a gradient vector corresponding to the inclination direction of the surface to render to move the texture It is about.

An image processing method indicative of the inclination of a surface according to the invention comprises the steps of rendering a surface; Generating an inclination vector representing the inclination of the surface; And rendering a texture having a predetermined thickness and length to move in the direction of the gradient vector.

According to the present invention, the user can more easily and intuitively grasp the inclination of the indicator.

Description

Image processing method and system for denoting surface inclination using gradient vector TECHNICAL FIELD

The present invention relates to an image processing method and a system for indicating a slope of a surface by using a slope vector, and more particularly, to generate a slope vector corresponding to the slope direction of the surface to render to move the texture to represent the slope of the surface It relates to an image processing method and system.

Today, with the development of information and communication technology, a variety of video games and computer games have been released. These video games and computer games use not only 2D graphics but also 3D graphics technology to provide more colorful and realistic image processing methods. Is implemented.

In particular, the slope of the green surface in a video game or a computer game that allows a golf game to be played using a character is a very important element in the golf game and needs to be described more precisely. In addition, it is very important to express the inclination of the green so that the user can intuitively recognize the step of putting on the green of the character.

Conventionally, various methods of representing the inclination of a surface have been used to enable users to recognize the inclination. For example, after dividing the surface into grid units and calculating the slope at each grid point, the spacing between grids where the slope is higher than the average slope is tight, and the spacing between grids at the slope less than the average slope is wider. There is a way to allow the user to recognize the slope.

However, such a conventional method has a disadvantage in that the user does not immediately recognize the inclination, thereby reducing the realism felt when the user uses the game. In addition, the image processing method according to the prior art, even if the video game or computer game to be implemented is a 3D game, because it is shown in 2D on the output means (for example, screen, monitor screen) to the user, it is difficult to display the exact gradient There was a difficulty.

As a solution to this problem, Japanese Patent Application No. 2002-59985 discloses a new image processing method for showing a grating on a surface and moving an object at a speed proportional to the slope between the lines connecting the gratings. It is starting.

1 illustrates an example of a golf game process using an image processing method indicating the direction of tilt in the patent application. However, the patent application only shows the velocity of particles moving to each component (X-axis component, Y-axis component) of the lattice based on the lattice in displaying the inclination of the surface. There is still a problem that it is difficult to grasp the slope of the entire green at a glance, including the space between the X axis and the adjacent X axis, and the space between the Y axis and the adjacent Y axis. In addition, since the information about the inclination is expressed through the particles moving on the grid, there is a limit that the inclination is expressed discontinuously and discontinuously.

Accordingly, there is an urgent need for a new image processing method and system for providing a user with an overall information on the tilt so that the user can feel the image realistically.

The present invention has been made to improve the prior art as described above, an object of the present invention is to enable the user to more easily and intuitively grasp the inclination of the indicator.

Another object of the present invention is to provide the user with the inclination of the indicator through various expression methods.

Another object of the present invention is to provide the user with a visually comfortable screen configuration for tilting the indicator.

It is another object of the present invention to enable a user to easily obtain systematic and comprehensive information on the surface slope.

Another object of the present invention is to provide a realistic game screen to the user to double the interest in the game and increase the game participation.

According to an embodiment of the present invention, an image processing method representing a slope of a surface includes: rendering a surface; Generating an inclination vector representing the inclination of the surface; And rendering a texture having a predetermined thickness and length to move in the direction of the gradient vector.

In addition, the image processing system representing the inclination of the surface according to an embodiment of the present invention comprises the steps of storing and maintaining the altitude information for the surface in the database for each area;

Receiving region selection information from a user; In response to receiving the region selection information, extracting altitude information corresponding to the selected region from the database;

Generating a gradient vector based on the extracted altitude information; And rendering the texture having a predetermined thickness and length to move in the direction of the gradient vector.

In addition, the image processing system exhibiting a slope to the surface according to an embodiment of the present invention calculates a normal vector at any point on the surface, sets a plane perpendicular to the direction of gravity based on the arbitrary point, and the normal An inclination vector generator for generating the inclination vector by orthogonally projecting a vector to the set plane in the gravity direction; And a texture controller for controlling a texture having a predetermined thickness and length to move in the direction of the gradient vector.

In addition, the image processing system representing the inclination to the surface according to an embodiment of the present invention includes a database for storing and maintaining the altitude information for the surface area; A user interface for receiving region selection information from a user; A gradient vector generator configured to extract altitude information corresponding to the selected region to the database in response to receiving the region selection information, and generate an inclination vector based on the extracted altitude information; And a texture controller for controlling a texture having a predetermined thickness and length to move in the direction of the gradient vector.

The term " texture " used in the present invention is an elongated wave form displayed on the screen to indicate the inclination of the surface, and may have various modifications to those skilled in the art. It can be obvious.

Hereinafter, an image processing method and system for representing tilt according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram illustrating an internal configuration of an image processing system indicative of the inclination of a surface according to an embodiment of the present invention.

Referring to FIG. 2, an image processing system representing an inclination of a surface according to an exemplary embodiment of the present invention includes a gradient vector generation unit 201, a texture control unit 202, a database 203, and a user interface 204. Can be configured.

The user interface 204 receives region selection information from the user. When the user connects to the present system through a wired or wireless communication network, the user interface 204 may include communication network connection means. Alternatively, the user interface may directly include input means such as a mouse, keyboard, etc. without receiving a separate communication network, and may receive region selection information from the user through the input means.

The database 203 stores and maintains altitude information on the surface area by region. As an example, the altitude information may be displayed as coordinate values at each point, or may be displayed as a relative or absolute altitude value of each point.

The gradient vector generator 201 extracts altitude information corresponding to the selected region from the database 203 in response to receiving region selection information of the user interface 204, and based on the extracted altitude information, A normal vector is calculated at an arbitrary point on an area, a plane perpendicular to the gravity direction is set based on the arbitrary point, and the normal vector is projected in the gravity direction on the set plane to generate the inclination vector.

The texture control unit 202 shows (rendering) a texture having a predetermined thickness and length to move in the direction of the gradient vector. The texture control unit 202 according to the present invention may include rendering means for imaging the texture data so that the texture data can be drawn on a display device using a rendering technique used in a general image processing apparatus and method.

3 is a flowchart illustrating processes performed in an image processing method representing tilt according to an embodiment of the present invention.

First, the image processing system 200 renders a surface that is intended to exhibit tilt. Next, the surface to be inclined is divided into N polygons R (step S1). As described above, dividing into a plurality of polygons is to indicate the inclination by using the divided polygon as one unit, the present invention is not limited to the shape and number of polygons. Alternatively, it is also possible to show the whole area as a polygon without division.

The gradient vector generator 201 generates a normal vector at an arbitrary point of the polygon. The method of generating the normal vector is described in detail below. When the normal vector is generated in the gradient vector generator 201, the gradient vector is generated using the normal vector (step S4).

The texture control unit 202 calculates the moving speed of the texture and the size of the texture using the size of the gradient vector generated earlier (step S5). This step is performed for each divided polygon (step S6, step S7).

When the moving speed and the size of the texture are calculated, the texture control unit 202 renders the texture on the surface (S8). The texture control unit 202 controls the texture to move from the first high altitude region of the polygon R to the second low altitude region (step S9). When the texture arrives in the second area, the texture control unit 202 deletes the texture and regenerates the texture in the first area (step S10). Through these steps, the image processing method and system for indicating the slope may render the texture representing the slope on the surface to be shown.

4A, 4B, 4C, and 4D illustrate a process of obtaining a normal vector of a surface according to an embodiment of the present invention. Hereinafter, processes for obtaining a normal vector will be described in order with reference to the drawings.

First, in FIG. 4A, an arbitrary point P (x, y, z) of a surface to be inclined is selected. The point P selected at this time may be divided into a polygon R having a predetermined size and may be a vertex of each partition, or may be any point included in each partition.

Next, in Fig. 4b, the normal vector N corresponding to the normal force at the arbitrary point P is obtained. Vertical drag means the force that an object receives from a surface (or a curved surface) when an object is placed on the surface, and in the present invention, assumes that a virtual object having a unit mass lies at point P and calculates the vertical drag. . A normal vector is a vector perpendicular to the tangent plane to a point on a curved surface (or surface) and defined as a vector having a magnitude and a direction corresponding to the normal force. According to the present invention, a normal vector may be generated by extracting elevation information stored in a database.

Alternatively, if the curved surface is represented by a mesh that is a set of polygons on a computer, and a normal vector at a point P cannot be obtained exactly, the following method shown in FIGS. 4C and 4D may be used.

(1) A coordinate axis is set at an arbitrary point P, and the position vectors P1, P2, P3, and P4 on the surface in the + X, -X, + Z, and -Z directions are obtained from the point P (Fig. 4C). .

(2) A vector obtained by normalizing (P3-P4) x (P1-P2), which is a vector product of vector (P3-P4) and vector (P1-P2), can be approximated by the normal vector ( N ) at point P. (FIG. 4D).

5A through 5D are diagrams illustrating a process of obtaining a gradient vector and rendering a texture on a surface. Hereinafter, with reference to the drawings will be described in order.

First, the normal vector N at any point P on the surface is obtained using the method described above with reference to FIGS. 4A to 4D (FIG. 5A).

The gradient vector generator 201 sets a plane perpendicular to the direction of gravity at any point P on the surface (FIG. 5B). The normal vector at point P is projected in a plane perpendicular to the direction of gravity (FIG. 5C). The projected vector is defined as the gradient vector 501. In this case, the direction of the inclination vector may be represented by a vector form n (x, 0, z) or may be represented by θ, which is an angle between the inclination vector and the x axis. In addition, the magnitude of the gradient vector may be represented by √ (x ^ 2 + z ^ 2). At this time, the larger the degree of inclination, the larger the magnitude of the inclination vector projected on the plane, and thus, the magnitude of the inclination vector can indicate the degree of inclination (inclination).

The texture controller 202 may render a texture representing the slope using the direction and the magnitude of the gradient vector (FIG. 5D). The texture can be shown arranged in the direction of the gradient vector. Thus, according to the present invention, the slope can be displayed by calculating the slope vector corresponding to the slope of the surface and showing the texture based on the calculated slope vector. Therefore, by rendering a texture that is directly coincident with the direction of inclination and proportional to the magnitude of the inclination, the user can easily and intuitively recognize the inclination of the surface.

6A and 6B illustrate an example of a process of moving a texture in a direction of a gradient vector in an image processing method and a system according to an embodiment of the present invention.

The moving speed of the texture may be determined in proportion to the size of the gradient vector obtained above. For example, the moving speed of the texture (V) = c * (size of the gradient vector) (c: a constant determined by the gradient vector and other variables. Can be calculated as

In FIG. 6A, the polygons of FIG. 5D, which were previously shown with respect to the X and Y axes, are rotated by θ about the point P to correspond to the new coordinate axes u and v.

In FIG. 6B, the polygon set based on the new coordinate axes u and v is moved and illustrated in the u direction. That is, the polygon may be shifted and illustrated in the u direction by the distance that the texture moves per unit time Δt at the moving speed of the texture in the u direction. That is, by shifting c * (size of the inclination vector) * Δt, it is shown to the user that the texture moves at a speed proportional to the magnitude of the inclination vector in the oblique direction. Repeat the above steps for the divided planar polygons.

As described above, according to the present invention, by showing the movement of the texture according to the direction of the inclination vector, the user can easily grasp the inclination direction, and also by determining the moving speed of the texture according to the magnitude of the inclination vector, The effect of intuitively recognizing the degree (inclination) can be obtained.

The present invention provides a further embodiment in which the inclination can be variously displayed to the user.

As an example, the size of the texture may be determined in proportion to the size of the gradient vector, where the size of the texture may be expressed by thickness and length. That is, the texture at the point where the magnitude of the gradient vector is large can be shown long, and the texture at the point where the magnitude of the gradient vector is small can be shown with a shorter length. Alternatively, the texture at the point where the magnitude of the gradient vector is large can be shown thick, and the texture at the point P where the magnitude of the gradient vector is small can be shown as thin. As such, according to the present invention, by expressing the length or thickness differently as the size of the texture, the user can grasp the inclination at a glance.

As another embodiment of the display of the slope, the altitude of the surface is divided into a predetermined number of plural sections, and a predetermined color is assigned to each of the divided sections, so that the color of the texture is changed according to the section to which the point P belongs. It may be shown otherwise. The color change of the texture according to the altitude also has the effect of inclining the inclination to the user. For example, increase the Red value among the RGB (Red, Green, Blue) assigned to the texture as it goes up above the average altitude, making the red component stand out. The blue component can be shown to be tapped.

As another embodiment of the issa display, the image processing system according to the present invention may determine the opacity of the texture according to the size of the gradient vector and apply the determined opacity to the texture. Opacity is determined to the extent that the background color of the surface and the texture color are mixed.

The opacity of the texture may be shown in proportion to the magnitude of the gradient vector or inversely. If the texture's opacity is plotted relative to the size of the gradient vector, the texture is opaque where the gradient vector is large, i.e. where the slope is in a hurry, so that the texture color appears more pronounced than the background color, and the size of the gradient vector In small places, where the slope is gentle, the texture is shown relatively transparent, making the background color appear more pronounced.

The color A of the texture that is actually rendered by applying opacity according to the size of the gradient vector may be expressed as follows.

A = background color * (1-a) + A '* a

(Where a = opacity and A '= texture color before opacity is applied)

According to the above formula, the smaller the value of a, the sharper the texture and the larger the value of the a, the more transparent the texture. In other words, by adjusting the opacity of the texture, the user can more clearly recognize the movement of the texture where the gradient is large. In addition, the image processing system can adjust the opacity of the texture so that the user can visually perceive the flow of the texture.

7A and 7B illustrate an embodiment of a database that may be employed in an image processing method and system that exhibits a slope on a surface in accordance with one embodiment of the present invention.

Referring to FIG. 7A, the database 203 of the image processing system 200 representing an inclination on a surface divides an area to represent an inclination into N polygons R to obtain altitude information (for each polygon area R 701). 702, gradient vector magnitude 703, gradient vector direction 704, texture velocity and magnitude 705 fields.

Altitude information 702 stores altitude information for each polygon R 701. For example, when trying to indicate the slope of the putting green in a golf game, the altitude information of the putting green for each course and for each hole may be maintained for the polygonal area. As an example, the smaller the polygon size, the more dense altitude information can be maintained.

The gradient vector size 703 may maintain information of the magnitude 703 of the gradient vector generated by the gradient vector generator 201 for each polygon R. FIG.

The gradient vector direction 704 may maintain information about the direction of the gradient vector generated by the gradient vector generator 201 for each polygon R. FIG. As an example, the gradient vector direction may be represented by a coordinate value.

The speed and size of the texture 705 may maintain the speed and size information calculated by the texture controller 202 using the size 703 of the gradient vector.

FIG. 7B illustrates another embodiment of a database that may be employed in an image processing method and system that exhibits a slope on a surface in accordance with one embodiment of the present invention.

Referring to FIG. 7B, the database 203 of the image processing system 200 representing the inclination on the surface divides the area to show the inclination into N polygons R so that the polygon area R for each polygon area R 706. The (x, y, z) coordinate value 707 of the vertex P belonging to can be recorded and maintained. In some embodiments, the normal vector value normal at the point P can be recorded and maintained.

8A and 8B are diagrams illustrating a movement of a texture representing a slope in a golf game, which is an application of the image processing method and the system, which shows a slope on a surface according to an embodiment of the present invention.

Referring to FIG. 8A, there is an example of a golf game in which an image processing method and a system representing an inclination on a surface according to an embodiment of the present invention may be applied. Implementing an image processing method or an image processing system according to an embodiment of the present invention may be applied to a golf game system.

When a user starts a golf game through a user interface and selects a character to play the game, the game starts. When the user strokes the golf ball using the character and the golf ball contacts the putting green, the user's character enters the putting green.

In the game of golf, the "putting green" refers to the entire area specially prepared for the putting of the hole currently being played. In a golf game a putting green is shown if a portion of the golf ball is in contact with the putting green. On the putting green, even a slight slope has a great influence on the game, so that the user needs to recognize the slope accurately and play the game. Therefore, it is necessary to enable the user to intuitively and accurately recognize the inclination.

The database 203 described above stores and maintains altitude information on the putting green surface for each region. In other words, we maintain altitude information about putting green for each course and hall.

When the character in the user's golf game enters the putting green, the user interface 204 receives region selection information from the user. In the case of a golf game, the area selection information may be input for allowing a character to stroke a golf ball to contact the putting green.

The gradient vector generator 201 extracts the altitude information corresponding to the selected area from the database 203. That is, the gradient vector generator 201 divides the putting green into several planar polygons and generates an inclination vector based on the extracted altitude information at an arbitrary point of each planar polygon.

The texture control unit 202 renders a texture having a predetermined thickness and length to move in the direction of the gradient vector. The texture controller 202 divides the planar polygon into a first high altitude region and a second high altitude region using the altitude information, and then the texture is divided into a second altitude region from a high altitude region. Move in the direction of inclination.

At this time, the region of high altitude and the region of low altitude may be determined according to the direction of the inclination vector. Since the moving speed is proportional to the size of the inclination vector, the movement of the texture is shown quickly in the planar polygon of which the size of the inclination vector is large, and the movement of the texture is shown slowly in the plane polygon of which the size of the inclination vector is small. In FIG. 8 and FIG. 8B, the speed of each texture is calculated differently according to the inclination of the planar polygon to which the texture belongs, so that the movement of the texture is fast and in some parts of the putting green is slow.

The texture is generated in the first area of the planar polygon and moves to the second area. The golf game system may allow the texture to be deleted when the texture leaves the first area and arrives in the second area, and the texture may be regenerated and moved in the first area.

At this time, since the flow of the texture is continuous, the polygon R used to generate the texture may not be illustrated on the putting green. The texture is regenerated using the direction and the size of the gradient vector in the first region, which is a high altitude region of the polygon R, in operation 801.

FIG. 8B illustrates the continuous movement of the texture in the direction of the inclination vector following FIG. 8A in the golf game shown in FIG. 8A.

Referring to FIG. 8B, it can be seen that the texture 801 formed in the golf game shown in FIG. 8A is moved at a speed proportional to the magnitude of the gradient vector in the direction of the gradient vector (802). Here, the larger the magnitude of the gradient vector, the faster the texture movement speed in the gradient direction.

8C and 8D are diagrams illustrating an inclination by adjusting opacity and color of a texture in a golf game that is an application example of an image processing method and an application of the inclination to a surface according to an embodiment of the present invention.

Referring to FIG. 8C, in an area 803 having a high degree of inclination of the putting green and having a large size of the inclination vector, the opacity of the texture is increased to make the texture appear more clearly than the surrounding background so that the user can recognize the inclination with certainty. In the area 804 where the size of the gradient vector is small and the gradient vector of the putting green has a low value, the texture is shown as transparent by reducing the opacity of the texture, so that the user more clearly recognizes a relatively gradient area. You can do it.

Referring to FIG. 8D, the texture 805 in the altitude region higher than the average altitude increases the red value among the RGBs (Red, Green, Blue) assigned to the texture to make the red component stand out, and the altitude region lower than the average altitude. The texture 806 in FIG. 3 shows that the blue component is shown to be beaten by increasing the Blue value among the RGBs (Red, Green, Blue) assigned to the texture.

9A and 9B are diagrams illustrating an image processing method for representing a slope on a surface according to an embodiment of the present invention and a texture representing a slope in a golf game that is an application of the system.

As shown in FIG. 9A, the putting green of a golf game may be composed of N polygons (including 901 and 902), and the slope of the golf game may be changed by moving a texture having a length or thickness in consideration of the size of the gradient vector in the direction of the gradient vector. Can be represented.

For example, the area of the polygon 1 901 has a smaller inclination than the area of the polygon 2 and has a different inclination direction. Therefore, the size of the inclination vector corresponding to polygon 1 901 is smaller than that of polygon 2 902 so that the texture is short in length and slow in moving speed. On the contrary, the texture shown in polygon 2 902 has a larger value than that in polygon 1 901 so that the length is long and the moving speed can be rendered faster. Alternatively, the texture of polygon 902 may be shown in a form thicker than the texture of polygon 901.

As shown in FIG. 9A, the golf game shows a texture moving in the direction of the inclination vector with a predetermined thickness and length with respect to the entire putting green, so that a user using the golf game may be more inclined and partially curved in the putting green. Even intuitively, you can enjoy more realistic games.

FIG. 9B is a diagram illustrating a texture illustrated in one polygon in FIG. 9A.

Referring to FIG. 9B, one polygon illustrated in a putting green in a golf game may include a first region 903 in which a texture is generated and a second region 904 in which a texture is deleted.

The golf game system may cause the texture to be deleted when the texture leaves the first region 903 and reaches the second region 904, and the texture may be generated and moved again in the first region 903. .

The image processing system according to the present invention may be connected to a user terminal through a wired or wireless communication network, and may render a texture to display a texture according to the present invention on a user's terminal. A user terminal is a device equipped with hardware and software that can be accessed from a wired or wireless network, such as a desktop PC, a notebook PC, a PDA, a mobile phone, etc., and a device that will be used in the future as well as a device that can be connected to a wired or wireless network. It is interpreted as a concept that includes all of them.

Embodiments of the invention also include computer-readable media containing program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The medium or program instructions may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. A program capable of performing the image processing method according to the present invention may be installed and operated in a user's terminal.

10 is an internal block diagram of a general purpose computer device that may be employed in an image processing method and system that exhibits a slope of a surface in accordance with the present invention.

The computer device 1000 includes one or more processors 1010 connected to a main memory device including a random access memory (RAM) 1020 and a read only memory (ROM) 1030. The processor 1010 is also called a central processing unit (CPU). As is well known in the art, the ROM 1030 serves to transfer data and instructions to the CPU unidirectionally, and the RAM 1020 typically transmits data and instructions bidirectionally. Used to. RAM 1020 and ROM 1030 may include any suitable form of computer readable media. Mass storage 1040 is bi-directionally coupled to processor 1010 to provide additional data storage capability, and may be any of the computer readable recording media described above. The mass storage device 1040 is used to store programs, data, and the like, and is a secondary memory device such as a hard disk which is generally slower than the main memory device. Certain mass storage devices such as CD ROM 1060 may be used. The processor 1010 may include one or more input / output interfaces such as video monitors, trackballs, mice, keyboards, microphones, touchscreen displays, card readers, magnetic or paper tape readers, voice or handwriting readers, joysticks, or other known computer input / output devices. 1050 is connected. Finally, the processor 1010 may be connected to a wired or wireless communication network through the network interface 1070. Through this network connection, the procedure of the method described above can be performed. The apparatus and tools described above are well known to those skilled in the computer hardware and software arts.

The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention.

According to the present invention, the user can more easily and intuitively grasp the inclination of the indicator.

In addition, according to the present invention, the slope of the indicator can be provided to the user through various expression methods.

In addition, according to the present invention can provide a user with a visually comfortable screen configuration for the slope of the indicator.

In addition, according to the present invention, the user can easily obtain systematic and comprehensive information on the slope of the indicator.

In addition, according to the present invention can provide a realistic game screen to the user can double the interest in the game and increase the game participation.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

1 shows an example of a golf game process using an image processing method indicating the direction of inclination in Japanese Patent Application No. 2002-59985.

2 is a block diagram illustrating an internal configuration of an image processing system indicative of the inclination of a surface according to an embodiment of the present invention.

3 is a flowchart illustrating processes performed in an image processing method representing tilt according to an embodiment of the present invention.

4A, 4B, 4C, and 4D illustrate a process of obtaining a normal vector of a surface according to an embodiment of the present invention.

5A through 5D are diagrams illustrating a process of obtaining a gradient vector and rendering a texture on a surface.

6A and 6B illustrate an example of a process of moving a texture in a direction of a gradient vector in an image processing method and a system according to an embodiment of the present invention.

7A and 7B illustrate an embodiment of a database that may be employed in an image processing method and system that exhibits a slope on a surface in accordance with one embodiment of the present invention.

8A and 8B are diagrams illustrating a movement of a texture representing a slope in a golf game, which is an application of the image processing method and the system, which shows a slope on a surface according to an embodiment of the present invention.

8C and 8D are diagrams illustrating an inclination by adjusting opacity and color of a texture in a golf game that is an application example of an image processing method and an application of the inclination to a surface according to an embodiment of the present invention.

9A and 9B are diagrams illustrating an image processing method for representing a slope on a surface according to an embodiment of the present invention and a texture representing a slope in a golf game that is an application of the system.

10 is an internal block diagram of a general purpose computer device that may be employed in an image processing method and system that exhibits a slope of a surface in accordance with the present invention.

<Explanation of symbols for the main parts of the drawings>

201: slope vector generator

202 texture control

203: database

204: user interface

Claims (15)

In the image processing method for indicating the slope of the surface, Rendering the surface; Generating an inclination vector representing the inclination of the surface; And Rendering a texture having a predetermined thickness and length to move in the direction of the gradient vector Image processing method comprising a. The method of claim 1, The step of generating the gradient vector Calculating a normal vector at any point on the surface; Setting a plane perpendicular to the direction of gravity based on the arbitrary point; And Generating the gradient vector by projecting the normal vector onto the set plane in the direction of gravity Image processing method comprising a. The method of claim 1, Calculating velocity using the magnitude of the gradient vector More, And said texture moves at said calculated speed. The method of claim 1, The step of rendering the texture to move in the direction of the bevel vector Moving the texture from a first area to a second area having an altitude lower than the first area, the altitude being determined according to the direction of the gradient vector; And When the texture arrives at the second area from the first area, the arrived texture is deleted and rendered to be regenerated and moved in the first area. Image processing method comprising a. The method of claim 1, Dividing the elevation of the surface into a predetermined number of sections; And Allocating a predetermined color for each of the divided sections More, Rendering the texture to move in the direction of a gradient vector renders the texture according to the assigned color. The method of claim 5, And the step of assigning a predetermined color assigns a proportion of a specific color in proportion to the difference with the average elevation of the surface. The method of claim 1, Calculating a magnitude of the gradient vector; And Determining an opacity of the texture according to the calculated magnitude of the gradient vector, wherein the opacity is determined such that the background color of the surface and the texture color are mixed. More, Rendering the texture to move in the direction of the gradient vector renders the texture by applying the determined opacity. The method of claim 7, wherein The opacity is proportional to the magnitude of the gradient vector. The method of claim 7, wherein The texture color (A) applying the opacity is A = background color * (1-a) + A '* a (where a = opacity, A' = texture color before opacity is applied) It is determined that the image processing method. The method of claim 1, Calculating the magnitude of the gradient vector More, At least one of the predetermined thickness and length is determined according to the magnitude of the gradient vector. Storing and maintaining altitude information on the surface for each region in a database; Receiving region selection information from a user; In response to receiving the region selection information, extracting altitude information corresponding to the selected region into the database; Generating a gradient vector based on the extracted altitude information; And Rendering a texture having a predetermined thickness and length to move in the direction of the gradient vector Image processing method comprising a A computer-readable recording medium having recorded thereon a program for implementing a method according to any one of claims 1 to 11 on a computer. In an image processing system exhibiting an inclination to a surface, Calculating a normal vector at an arbitrary point on the surface, setting a plane perpendicular to the direction of gravity based on the arbitrary point, and projecting the normal vector to the set plane in the direction of gravity to generate the inclination vector Gradient vector generator; And Texture control unit for rendering a texture having a predetermined thickness and length to move in the direction of the gradient vector. Image processing system comprising a. The method of claim 13, The gradient vector generator calculates a velocity using the magnitude of the gradient vector, And the texture control unit controls to move the texture at the calculated speed. A database for storing and maintaining altitude information on a surface for each area; A user interface for receiving region selection information from a user; A gradient vector generator configured to extract altitude information corresponding to the selected region to the database in response to receiving the region selection information, and generate an inclination vector based on the extracted altitude information; And Texture control unit for controlling a texture having a predetermined thickness and length to move in the direction of the gradient vector. Image processing system comprising a.